package com.yj.lottery_system.service.impl;

import com.yj.lottery_system.common.errorcode.ServiceErrorCodeConstants;
import com.yj.lottery_system.common.exception.ServiceException;
import com.yj.lottery_system.service.IPictureService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.util.UUID;

@Service
public class PictureServiceImpl implements IPictureService {
   @Value("${pic.local-path}")
    private String localPath;
    @Override
    public String savePicture(MultipartFile multipartFile) {
        //创建目录
        File dir = new File(localPath);
        if(!dir.exists()) {
            dir.mkdirs();
        }

        //创建索引
        //获取当前文件名 截取后缀 自己文件名拼接后缀
        String fileName = multipartFile.getOriginalFilename();
        assert fileName != null;
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        fileName = UUID.randomUUID()+suffix;

        //图片保存
        try {
            multipartFile.transferTo(new File(localPath+"/"+fileName));
        } catch (IOException e) {
            throw new ServiceException(ServiceErrorCodeConstants.PICTURE_UPLOAD_ERROR);
        }

        return fileName;
    }
}
